Grain-cleaning mechanism



A. P. GOULD. GRAIN CLEANING MECHANISM. APPLICATION FILED APR. 20, 1918- 1,383,463. Patented July 5, 1921.

3 SHEETS-SHEET 1- I I I 17717677167. flctron I? GbuZcZ,

A. P. GOULD.

GRAIN CLEANING MECHANISM.

APPLICATION mm APR.20, 1912.

1,383,463. a Patented July 5, 1921.

3 SHEETS-SHEET 2- u mw v 58 l/ 58 40 fiction/26 0 Patented July 5, 1921'.

ISIIEETS-SHEET 3.

'A. P. GOULD. GRAIN'QLEANING MECHANISM. APPLICATION men mnzo. 191a.

NAM

Irw enzor flaron/ 1? 8011107) y 1 55 the other bracket 11 and in from the plate 15 The hopper 18is UNITED STATES AARON IP. GOULD, OF NORTH WILKE-SBORO, NORTH MEADOWS MILL COMPANY, A CORPORATION PATENT OFFICE.

CAROLINA, ASSIGN'OR 'ro w. 0. or NORTH CAROLINA.

' GRAIN -CLEAN IN G MEGHAN ISM.

To all whom it may concern Be it known that I, AARON P. GOULD, a citizen of the United States, residing at North Wilkesboro, in the county of Wilkes and State of North Carolina, certain new and useful Improvements in Grain-Cleaning Mechanism, of which thefollowing is a full, clear, and exact specification.

This invention relates'to mills, and more particularly to mills for producing flour, such as rice, corn meal, rye, whole wheat, barley, graham, buckwheat, etc.

The object of the invention is to improve the cleaning or scouring mechanism of flour mills, and to provide a new and improved combination of elements constituting the grain scouring mechanism so that the mill will have a large capacity and will produce a superior grade of flour but will occupy a minimum amount of space;

In the accompanying drawings I have illustrated one embodiment of the invention, and in these drawings,

'Figure 1 shows aside elevation of the combined cleaning, grinding and sifting mechanism;

Fig. 2 shows at front elevation, partly broken away, of the cleaning and grinding mechanism;

Fig. 3 is a longitudinalsectional view of t e cleaning mechanism; i

' F ig.4 is a transverse-sectional view of the construction shown in Fig. 3; and

Fig. .5 is a front elevation showing the flour bolter or sifting mechanism.

The hopper, cleaning and grinding mechanism is supported on'a base 10 which carries a bracket 11 at one end 'thereofand at end a casing 12 for the grindin mechanism. The maln drive shaft 13 for the various mechanisms is journaled in the casing 12, and carries; a pulley 14 which is connectedto a suitable source of power. The casing 12 for the grinding mechanism supports a plate15 which in turn carriesthe cleaning cylinder .16, oscillatory sieve'17 iorscreen, andthe hopper 18, the latt er being supported by suitable brackets 19 which extend upwardly and from the casing of the cleaning cylinder. i

provided with 'a chute 20 at its lower end and the passage of thegrain through this chute is controlled by suitable Specification of Letters Patent.

have invented stantially Patented July 5, 1921.

Application filed April 20, 1918. Serial No. 229,744.

valve mechanism 21 which in turn is regulated by lever 22 and the thumb screw 23. Immedlately below the chute 1 there is disposed the screen 17 which such Patent N o. e screen 17 is plvotally connected with the plate 15 by 7 means of a link and the screen is oscillated by an eccentric carried by a stub shaft which is rotated by thepassageway 25 leading through the outer casing 26 lnto the perforatedcyl- Thls cylinder-27 incloses a heater %8 which is made up of a central sleeve mem er beater blades 30 and 31.

s clearly shown in Fig.

vanes 32,

the same as the difference in width between the blades 31 and 30, so that they act only on material thrown beyond blades The beater 28 is secured to ashaft 33 casing 26 there is secured provided with a central opening 38 on the side secured to a fan 39 which is also secured to t'he'shaft An exit opening 40 is provided in the perforated cylinand 4.

perforated cylindrical 29 and a series of outwardly projecting the casing 26 and inclosing Y cylinder 27 is provided The operation of the V willnow be briefly set forth.

The material which-passes through the screen 17 and opening 25 is conducted to the interior of the cylindrical casing '27 and there comes in contact cylindrical wall of the casing and the rods 41 and is in this way 2 The fine material 1 such .1et0.,

v This fine dust and 39' and from this conduit 42 into I [and conducted downwardlyonto the chute V 24. and passes The cleaned wardly suitable means, "mountedjon.

as. V

preferably formed of These blades 48 create is a current the surface, therebycooling the Y burs to a bolter or nism.

by aconduit the grinding mill casing.

From the fan 49 cleaned and polished.- as dust, fuzz, smut,

the cylinder '27 into the outer casing 26. other material is sucked through the open1ng. 38 into the fan casing casing is conducted by the cyclone separator 43,

where the dust and waste matter is collected out of, the -machine.

material. which passes downthrough the opening 40 is conducted by conduit 44 tothe-central openings in the grinding burs45 and 46. The bur 45 is stationary and is held in fixedposition byany and the bur 46 is-rotatably the shaft 13. The rotary bur on its peripherywith a band 47 steel, and this band carries outwardly projecting. fan blades 48.

of air between the grinding burs and draw the air in atjthe' center of the burs and force it; over flour which has become heated by grinding,xpreventing the flour from burning and producing a superior grade of flour. The blades also create a. fan; blastwhich may be utilized to conduct the meal from the casing of thegrinding through sifting mechais provided In the embodiment of the invention illustrated, I haveshown a supplemental fan 49 secured to the casing of the and having, a

51 to. a suitable opening 52 in This fan isdriven 53 to the drive shaft 13. the ground meal is conducted by a conduit54 to a cyclone separator by a belt connection '55, where the air and meal are separated," the meal passing downwardly through a chute *561 into'the bolter 57. It may be possible that fineparticles of flour will be carried ,upward outv of the central opening in the cyclone separator 55, and to prevent the loss r of these fine particles, a conduit 58 is provided, this conduit leading from the central cleaning cylinder the b'olte'r 57. The

is thrown through the perforations 1n V a into 1 the hopper 1S and passes dirt,

passing downwardly graded in; the well 7 grinding mill, central aperture connected for cleaning 7 grain;

aperture of the 'cyclone separator to a' supplemental separator 59, where the flour and air are aga1nseparated, the flour passing downwardly through a chutefl60 lnto bolter 57 may be of any standard construction and inthisibolter the various grades of fiour are separatechfllthe lighter grades and passing outiofthe left hand exitchute 61, the heavier grades passingoutof: therighthand exit 62. In thearrangement of the devicelillus-r trated in the drawings, the bolter is driven from the main drive shaft :13 by means ofia belted connection 63. V q The operation of .the'fvarious parts of the cleaning, grinding and will now be briefly described. v i The material tobe operated upon is fed through the the sieve l7 chute '20 and valve 21' into 7 floating on the heavier grades, 7

sifting mechanisms the machine: The material which passes.

through the; sieve enters the cleaning on scouring-cylinder,through the opening 25 and is agitated. bytthe 'beater28and "f gradually through the perforated cylinder 27 from theentrance end 7 As the material passes through. this per-' forated cylinder it -is cleaned and polished and the fine foreign-matter (such a dust, fuzz, smut, {mete passes outwardly through theperforations inthe cylinder 2 and .is sucked-into the fan "casing 37"Zand passes therefrom through the conduit 42 into the cyclone separator 43;; he cleaned ain' passes through the opening 40 and to theexit end, V V

inc

conduit 44- into the casing of the grinding mechanism and is there ground,passing outwardly between the stationary rotary bur. the current of air; created 'bythe; fans48 and is'for'ced by this current or'bya supplemental fan, such asf49 through the. conwhere the air and the flour are' wseparate iil Q known manner. Th

fine flour blown upwardl with theQair from the. separator 55 is conducted to anfauxiliary separator 59] where it; is separated; from the V bilrgand the The flour is cooled by} means of e air and passes downwardlyithrough achute 60 into the bolter. f V

From-the above description it will be; seen that I have provided an exceedingly. sim-V ple and compact larrangeme h a ra m n :0

nt of elements elements shown occupies avery small space,

andlby actual test thisarrangement has been found to have a' verylarge capacity for the size of the unit, and, to produce a very-superiorgradeof flour;

'While I have described one embodiment of my invention,

in the ate. spammed capable of modification,

it should be understood that the invention is and that modifications may be adopted without departing from the spirit and scope of theinvention as expressed by the following claims.

claim 1. Cleaning mechanism for grain mills comprising a drum, and a rotary beater carried by said drum, said beater having a plurality of elongated radially disposed fiat blades, certain of said-blades having a plurality of inclined grain conducting vanes extending laterally from one side thereof with the outer edges of the vanes and blades in the same plane.

In cleaning mechanism for grain mills, a rotary beater having elongated radial beater blades of diflerent widths, inclined vanes extending laterally from the outer edge of the wider blades and a cylindrical casing surrounding said beater.

3. In cleaning mechanism for grain mills, a perforated drum, longitudinally extending spaced rods secured to the inner surface of the drum, a rotary beater within the drum provided with elongated radial blades, the outer edges of which pass in roximity to said rods, and a plurality o inclined grain conducting vanes extending from one side of said blades at their outer edges.

4. In cleaning mechanism for grain mills, a rotary beater having alternating wide and narrow elongated radial beater blades and inclined vanes of a width substantially equal to the difference between the wide and narrow blades extending laterally from one side of the wider blades for feeding material as it is being agitated.

5. In cleaning mechanism for grain mills, a rotary beater having radial flat blades of different widths, narrow blades being dis posed between wider blades, the projecting portions of said wider blades being pro vided adjacent their outer edges and on one side with means for directing the grain from one end of the beater to the other end thereof.

In testimony whereof I afiix my signature.

AARON P. GOULD. 

